1. If already assembled, remove the suction strainer and cable guard from the
pump.
2.
Clean all locating surfaces, contact surfaces and threads with a cleaning agent.
Thoroughly remove any residues of the preservative.
3. Grease the shaft stub of the motor and the sleeve coupling of the pump.
4. Apply a thin layer of grease to the locating surfaces and contact surfaces.
5. On new motors, remove the transport lock from the shaft.
To do so, remove screw (1) and strap (2).
6. Position the motor horizontally and secure it against tipping over.
7.
Suspend the pump from the crane and align it so that the cable recess, coupling
sleeve and screws/bolts are in the correct position.
8. Centre the pump, fit the sleeve coupling around the shaft stub, and lower the
pump.
9. Fit nuts and assembly studs. Apply Loctite 242 and tighten the nuts by hand.
10. Insert the grub screw into the coupling sleeve and secure it with the
corresponding securing pin/bolt, if any, to prevent the pump from lifting off the
motor. Insert the securing screw into the coupling sleeve. Apply Loctite 242.
Gently screw in the screw until flush, then turn it back by
1
/
8
of a turn.
NOTE
Make sure the fitted grub screw does not touch the rotor.
11. Use a torque wrench to tighten the assembly studs; alternate sides after each
stud. Observe the tightening torque!(⇨ Section 7.6.2 Page 51)
12.
Re-check the tightening torques!
13. Fasten the power cables to the pump set together with the suction strainer and
the cable guard.
7.6.2 Tightening torques
Table 20: Maximum permissible tightening torques for the screws/bolts
Material/Property
class
5.6 8.8 C3 - 80 A4 - 50 A4 - 70 A4 - 80 1.4462 CuAl10Ni CuNi1,5S
i
Rp 0.2 [N/mm²] 300 640 640 210 450 600 450 270 540
Metric thread
Coarse-
pitch
thread
Fine-pitch
thread
Tightening torque M
A
[Nm]
M4
1.45 3.1 3.1 1.0 2.15 2.9 2.15 -- 2.6
M5
2.85 6.1 6.1 2.0 4.25 5.7 4.25 -- 5.1
M6
4.9 10.4 10.4 3.4 7.3 9.75 7.3 -- 8.75
M8
11.8 25.2 25.2 8.3 17.7 23.7 17.7 -- 21.3
7 Servicing/Maintenance
UPA, UPZ, BSX
51 of 64
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